您所在的当前位置：高中化学试题 >

离子共存

> 已知某强酸性溶液中存在较多的Ba 2+ 、NO 3 -，则溶液中还可能大量存在的离子组是 [ ] A. K +、NH 4 +、HCO 3 - B. Fe 2+ 、Ca 2+ 、Cl - C. Cu 2+ 、Mg 2+ 、SO 4 2- D. Na +、Cu 2+ 、Cl -

问题：

发布时间：2024-09-10

已知某强酸性溶液中存在较多的Ba ²⁺ 、NO ₃ ^-，则溶液中还可能大量存在的离子组是
[ ]
A. K ⁺、NH ₄ ⁺、HCO ₃ ^- B. Fe ²⁺ 、Ca ²⁺ 、Cl ^-
C. Cu ²⁺ 、Mg ²⁺ 、SO ₄ ^2-
D. Na ⁺、Cu ²⁺ 、Cl ^-

参考答案：

提问用户：06***fNc

可能感兴趣的题目：

1 质量M的平板车，上面站一个质量为m的人，车以v 0的速度在光滑水面上向右前进，如图所示．当人相对于地以v向后水平跳出，则人跳车前后车的动量变化方向是______，车速变化的大小为______．
2 __________ great fun it was to visit the World Expo in Shanghai last year! A.What B.How C.What a D.How a
3 下列关于实验现象的描述中正确的是 A．氢气在氯气中燃烧，发出苍白色火焰 B．钠在空气中燃烧，产生黄色火焰，并生成淡黄色的固体 C．铜丝在氯气中燃烧，产生棕色的烟雾 D．钠在氯气中燃烧，产生黄色的烟
4 关于长江的叙述正确的是 A.长江注入黄海 B.长江是我国最长、流域面积最广的河流 C.长江水运不发达 D.长江素有“水能宝库”之称
5 下列说法中不正确的是 A.能够利用强超声波对金属内进行探伤 B.在建筑方面，设计、建造大厅礼堂时，必须把回声现象作为重要因素加以考虑 C.利用超声波能够预测地震、台风和侦察大气中的核爆炸 D.街头设置自动噪声监测仪可以监控噪声污染
6 They began to think about what use could be _______ such materials. A．made up B．made from C．made of D．made out
7 设 a • b =4，若 a 在 b 方向上的投影为2，且 b 在 a 方向上的投影为1，则 a 与 b 的夹角等于（　　） A． π 6 B． π 3 C． 2π 3 D． π 3 或 2π 3
8 下列不属于我国四大盆地的是 A.柴达木盆地 B.塔里木盆地 C.准噶尔盆地 D.吐鲁番盆地
9 下列四个选项中的方法都可以有效地减弱噪声，其中在声源处减弱噪声的是 A.房间墙壁上使用吸音材料 B.在高架路两旁建隔音墙 C.在道路两旁种植花草树木 D.在摩托车上安装消声器
10 阅读理解。 Mrs. Amatuli was my teacher in the fourth grade. One day at lunch time, I was getting ready to eat my same old tuna fish (金枪鱼) sandwich and suddenly Mrs. Amatuli asked me if she could buy my sandwich from me. She explained that, I could use the money to buy a hot lunch from the cafeteria. I was thrilled. I never bought my lunch at the cafeteria. It was too expensive for my family, and we always carried our lunch and brought the bag back home to use again the next day. My sandwiches were either bologna (大腊肠) or tuna fish. It rarely varied beyond that. You can understand my delight when I had the opportunity to buy a hot lunch. When we finished lunch that day, Mrs. Amatuli took me aside and said she wanted to explain why she had bought my sandwich. I really didn"t care why, but it gave me a few minutes of her precious attention so I was very quiet as she explained. You see, she was Catholic and she told me that Catholics didn"t eat red meat on Fridays-they ate fish on Fridays. Oh, I couldn"t wait to get home and tell my Mama that from now on I wanted tuna fish on Fridays. After, my Mama understood why, she gladly fixed tuna fish for me on Fridays. She even fixed it on brown bread because she knew Mrs. Amatuli liked brown bread. From then on, every Friday I could get in line with the rest of the kids for a hot lunch. I didn"t care how many of the kids complained about cafeteria food-it tasted divine to me! I realize now that Mrs. Amatuli could have fixed herself a tuna sandwich of Friday. But she bought my sandwich because she saw a little girl who was thrilled over the simple act of having a hot lunch. I will never forget her for her compassion and generosity and what I should do is follow her example. 1. Mrs. Amatuli bought the writer"s sandwich because _____. A. she was tired of cafeteria food B. she hated getting in line with kids C. she didn"t eat red meat on Friday D. she wanted to show care to the writer 2. What can we learn about the cafeteria food? A. It was terrific. B. It was terrible. C. The writer enjoyed it. D. Most kids were fond of it. 3. The underlined word "divine" in Paragraph 5 means _____. A. perfect B. sweet C. unpleasant D. special 4. Which of the following can best show the theme of this text? A. It is hard to please all. B. Better to give than to receive. C. Love makes the world go around. D. The more you offer, the more you are rewarded.

已知某强酸性溶液中存在较多的Ba 2+ 、NO 3 -，则溶液中 还可能大量存在的离子组是 [ ] A. K +、NH 4 +、HCO 3 - B. Fe 2+ 、Ca 2+ 、Cl - C. Cu 2+ 、Mg 2+ 、SO 4 2- D. Na +、Cu 2+ 、Cl -

可能感兴趣的题目：

已知某强酸性溶液中存在较多的Ba ²⁺ 、NO ₃ ^-，则溶液中还可能大量存在的离子组是
[ ]
A. K ⁺、NH ₄ ⁺、HCO ₃ ^- B. Fe ²⁺ 、Ca ²⁺ 、Cl ^-
C. Cu ²⁺ 、Mg ²⁺ 、SO ₄ ^2-
D. Na ⁺、Cu ²⁺ 、Cl ^-